After a couple of practice runs to get the hang of tying it on, the Moby Wrap is king. The real difference here is that the Moby goes on in such a way that baby's weight is evenly distributed and your body catches a big break. Plus, you tie it on yourself, so you have total control over the fit. This one's perfect for simply getting your hands free to do chores (or, say, fix your hair), and it's awesome for keeping a baby or toddler secure (without killing your back) if you'll be shopping, hiking, or anywhere on your feet for a while.